Accounting machine



ACCOUNTING MACHINE Filed July 16, 1938 5 Sheets-Sheet l g INV'E%Z E ATTORNEY Feb. 10, 1942. E. J, RABENDA 2,272,430

ACCOUNTING MACHINE Filed July 16, 1938 5 Sheets-Sheet 2 BY nyykq I .ATT'ORNEY Feb. 10, 1942. E. J. RABENDA ACCOUNTING MACHINE Filed July 16, 1938 H a q B 6 a a. |!!l.\O.\!l.l:\, l. 110%: \ll 1il|\ Al 2 I l 6 w fi l. O 2 3 4 5 7u8 9 2 M -1 m H V EC 0 u 6 i. RWR T LA C mm A 4 C M C m T M 0 R TCARD SEPAKATES BR'USHEfi LB F 90 Cm O C CARD IMPULSE am 9%? M AT 'l'O Patented Feb. 10, 1942 2 272 430 UNITED STATES PATENT OFFICE ACCOUNTING MACHINE Edward J.Rabenda, Binghamton, N, Y., assignor v to International Business Machines Corporation, New York, N. Y., a corporation of New York Application July 16, 1938, Serial No. 219,558

I 10 Claims. (Cl. 23561.8) This invention relates to accounting machines Peirce. A main driving shaft l through gearing and more particularly to accumulating mecha-' designated ll drives ashaft l2. In,Fig.-4; shaft nisms employed therein. In the construction of l2 through suitable gearing drives pairs of card an accumulating mechanism there is usually profeed rollers 13 and a picker knife M to advance vicled for each denominational order thereof 5 record cards l5 singly from a supply hopper to combined adding and subtracting mechanism pass a set of upper analyzing brushes designated which is controlled by one pair of magnets to UB and a set of lower analyzing brushes desigenter an amount additively and by another sepanated LB. The relationship of the brushes is rate pair of magnets to enter an amount subsuch that as a card passes the lower brushes the tractively. next following card passes the upper brushes so It is an object of the present invention to that the correspondingly numbered index point simplify the mechanism required for a denomipositions of the two cards are concurrently national order of an accumulator by providing a sensed. single pair of magnets for controlling both add- In the path of the cards there are provided the ing and subtracting operations. usual card levers designated LCL and UCL which It is a further object of the invention to simserve to close their related contacts l6 and I1 plify thecontrolling circuit connections required respectively, when cards are traversing the for the operation of the accumulating mechabrushes. The shaft I2 makes one completerevonism of a tabulating machine. lution for each card advanced to pass. the

Further objects of the instant invention reside brushes. in any novel feature of construction or operation In Fig, 3 shaft I2 is shown as carrying a pair or novel combination of parts present in the of complementary cams l8 which through folembodiment of the invention described and lower 19 and linkage designated 20 causes oscilshown in the accompanying drawings. lation of shaft 2|. Ann 22 carriedby'the shaft In the drawings: has link connection 23 with a bail 24 pivoted at Fig. 1 is a view showing one denominational 25. At 25 there isals'o pivoted an arm 26 whose order of an accumulator, left hand end is connected by a link 21 to type Fig. 2 is a view similar to Fig. 1 with certain bar 28 which is suitably mounted for vertical reof the parts removed and others moved to operciprocation, The type bar carries the usual type ated position. i 30 elements 29 which, through the connections Fig. 3 is a diagrammatic representation of the traced, are advanced to pass a printing posioperating connections of a tabulating machine tion opposite platen 39 as the corresponding showing the relationship between the accumulaindex point positions of the record cards pass tor and the printing mechanism. the sensing brushes LB. As the type bar moves Fig. 4 diagrammatically represents the card upwardly, it maybe interrupted, to select any feeding and analyzing mechanism of a tabulating element 29, by printing magnet 3|, the attracmachine. tion of whose armature will rock latch 32 to re- Fig. 5 is a detail of the total readout and tens lease stopping pawl 33 for engagement with one carry mechanism. of the teeth 34 in the type bar 28. After all the Fig. 6 is a vertical section taken substantially type bars have been positioned, the usual printalong lines 66 of Fig. 2. ing'hammer 35 is tripped to take an impression- Fig. 7 is a similar view with the parts shown therefrom. I in outside view. The main drive shaft l0, through gearing 36, Fig. 8 is a wiring diagram of the electrical drives a'vertical shaft 31 which has the usual circuits of a simplified tabulating machine. beveled gear connection 38 with transverse shafts Fig. 9 is a timing diagram of the circuit clos- 39. The ratio of the gearing is such that shaft ing devices shown in Fig. 8. 39 makes one revolution for each card advanced Fig. 10 is a portion of a perforated record through the sensing mechanism. For each decard. nominational order of the accumulating mecha- Fig. 11 is a portion of the circuit diagram of nism, there is provided on each shaft 39 a gear Fig. 8 showing a different plug connection. 40 each of which serves to drive a denomina- Referring to Figs. 3 and 4 there is represented tion-al order unit of the accumulating mechanism.

the essential elements of a well known Hollerith For the illustration of the present invention, the tabulating machine such as shown in the Patent entire mechanism of the tabulating machine to No. 2,042,324 granted May 26, 1936 to J. R. which it is applied is not set'forth in detail and reference may be had to Patent 2,042,324, hereinabove referred to, for further structural details. It may be noted that in the machine of the patent the card feeding mechanism and the printing mechanism are disengageable from the constantly running drive shaft |2 (corresponding to shaft l1 of the patent) through clutch devices, and that so-called group control mechanism is included in the machine. These features are not repeated herein in order to simplify the disclosure. v Suffice it to say that the group control mechanism serves to stop the card feed upon change in group number of successive cards, or by means of a stop key such interruption may also be brought about. When the card feed comes to rest under such circumstances, it will be in the so-called home" position with the next card to be fed holding the card lever contacts i6 closed.

Referring to Figs. 2 and 6, meshing with each gear 48 is a gear 4| carried by a member 42 which is mounted for rotation, through suitable roller hearings, on a post 43 secured to a plate 44. The gear 4| is thus in constant rotation as long as the main drive shaft l8 operates. The member 42 carries a number of pins 45 which project through the cooperating notches in a disk 46 whi is carried by the member 42 but free to move thereon in an axial direction and constrained to rotate therewith through the pins 45.

Extending through the member 42 is a stud 41, one end of which carries a toothed wheel 48 and the other end carries a structure generally designated 49 upon which is mounted a pair of electrically connected brushes 58 (see Fig. 5) which cooperate with segments 5| and'a common arcuate conductor 62. The toothed wheel 48 constitutes the adding or accumulating element and is provided with teeth 53 facing the disk 46. The latter is also provided with teeth 54 as shown in Figs. 6 and 'l.

"Lying between the disk 46 and wheel 48 is a coil spring 56 which serves to hold the parts in the position shown in Fig. 6. The wheel 48 is normally locked in position by a detenting finger '66 (see Fig. 1) which is carried by a member 51 pivoted on stud 58. The member 51 is provided at its upper end with a beveled disk 59 which normally occupies a position adjacent to disk 46 as shown in Fig. 6, Fig. '1. The member 51 is urged to rotate in a counterclockwise direction by a spring I89 but is normally restrained against such rotation by the engagement of armature 6| with the arm 62 of member 51. Upon energize.- tion of magnet 63, armature 6| will be attracted to release arm 62 whereupon spring I09 will rotafe member 61 so that disk 59 will move to engage disk 46 and rock its teeth 54 into engagegxnt with.,the teeth of wheel 48. At the same e rocking of member 51 will remove detent 66 out of engagement with wheel 48 so the latter is thus free for rotation with the constantly r0- tating disk 46. This type of clutching mechanism is the same as shown and described in Patent 2,165,288, granted July 11, 1939, to A. W. Mills, which patent may be referred to for further detailed explanation.

Magnet 68 is energized in response to the sensing of perforations in the record cards as they traverse the sensing brushes LB. The controlling circuits will be traced hereinafter in connection with the circuit diagram. The amount that wheel 48 is advanced depends on the time at which the magnet is energized with respect to the time at which member 51 is positively restored to its initial position. This restoration is effected by a roller 64 carried by gear 4| which, as the gear rotates, engages an extension 65 on member 51 to positively rock the member in a clockwise direction causing it to be relatched by the armature 6|.

This relatching takes place at a definite time in the cycle and if the initial tripping is in response to the sensing of, let us say, a 6 hole in a card column the clutching engagement between disk 46 and wheel 48 will occur 6 steps before knock-out is effected. 'When the member 51 is restored, the detent finger56 engages the wheel 48 to positively lock it against further advance and disk 46 will be disengaged from the wheel. Secured to wheel 48 is the usual tens carry disk 66 with which a follower 61 cooperates. When the disk is positioned to represent a 9, follower 61 is permitted to rock slightly counterclockwise and through a pin 68 will enable brush 69 to contact a conducting element 1| (see Fig. 5).

When the disk 66 passes through zero position, follower 61 is rocked clockwise to cause brush 69 to contact with a conducting element 18. Latch 12 is provided to hold the follower 61 in its rocked position until released by a roller 13 carried by the gear 4|. The brush 69 and elements 10, 1| control tens carry circuits for energization of appropriate magnets 63 and where a carry operationvis to be effected into any order the magnet 63 in that order is energized after the roller 64 has restored member 51 and one step later, after the energization of the magnet for carrying has taken place, a second roller 14 again disengages the clutch after the wheel has advanced an additional step.

The magnet 63 is provided with a second armature 15 whose free end engages the right-hand end of a lever 16 pivoted at 11. The lever 16 is iormally engaged by a latch 18 which is connected by a link 18 to an arm 88 pivoted at 8| and whose free end cooperates with a cam 82. The cam 82 is secured to gear 4| and rotates therewith. During the entering portion of the cycle, follower 88 rides on the low portion of the cam so that the latch 18 is in a position as shown in Fig. 1, during additive entering operations, and although energization of magnet 63 will attract both its armatures 6| and 15, the latter will move idly.

The operation of the mechanism for adding as described hereinabove is substantially in accordance with the manner in which adding has been effected in prior machines. That is, the adding clutch is tripped at a differential time in response to the sensing of a perforation in a card column and declutching is positively effected at a definite time in the cycle. Before explaining the operation of subtraction, the controlling circuits for adding operations will be explained in connection with the circuit diagram.

Referring to Fig. 8, 88 represents a line leading to one side of a source of current and 84 represents the opposite line. Upon closure of switch 86 a circuitis completed through motor M which serves to drive the main shaft l8 of the machine from which the card feeding, printing, and accumulating mechanism are driven in synchronism. As a preliminary, plug connections 86 are made from the lower brushes LB to plug sockets 81 as indicated and a further plug connection 86a is made between sockets 88 and 89. The connection 92 between sockets 9| and 93 is also made when adding operations are to be effected. As the card advances through the sensing unit, it

will engage the lower card lever LCL to close contacts I8 thereby completing the circuit from line 83, contacts I6, relay magnet RI, to line 84. Relay RI closes its contacts RIa to provide a holding circuit through cam contacts CI I. The contacts CI I and I6 serve to keep relay RI energized as long as cards continue to pass the lower that during such period the relay R3 is energized to close contacts R3a whereby the plug sockets 81 are connected to wires 94 extending to the accumulator magnets 83. If the card now traverses the lower brushes, circuits through the magnets 88 will be completed. An adding circuit may be traced from line 83 through cam contacts CIA, contacts RIb (now closed), to the lower brush contact roller and thence through the perforation in the record card, lower brush LB, connection 86, socket 81, contacts R3a, wire 94, magnet 83 to line 84. The accumulator wheel will thereupon be engaged for rotation with the driving element of the clutch, and at the knock-out time disengagement will be effected.

At the carry time, cam contacts CI 0 close, completing a circuit from line 83, thro h wire 95, contacts RIc (now closed), contacts CIO, wire 96, to the contact elements I0. At the same time a pair of contacts C22 close, completing a circuit from line 84, contacts RId, contacts C22, relay magnet R4 to line 83. Relay R4 closes its contacts Rla so that for any accumulating wheel that has passed through 10, a circuit from wire 86 will continue through contact element I0 in the unit order for example, the units brush 69 to relay contacts R4a in the tens order and thence through the wire 94 to the tens order magnet 63. If the tens order wheel stands at 9, the circuit will branch to contact element II in the tens order, brush 89 and through contacts R421 in the hundreds order to the'magnet 63 in that order. The brush 8! in the highest order of the accumulator is connected by wire 91 to the contacts BM. in the units order. This conection is for the purpose of subtraction as will be explained.

Subtraction When subtracting operations are involved, a

perforation in the X position passes the sensing brushes, as this card traverses the upper brushes a circuit will be completed when the X hole is sensed which is traceable from line 83 through cam contacts CI8, upper card lever contacts II (now closed) the appropriate brush UB, connection I00, socket IIII, cam contacts CIB, relay magnet R2, to line 84. .Relay R2 closes its contacts Ric which provide a holding circuit traceable from line 84 through relay R2, contacts R20, contacts CI'I, line 83. Contacts CII are timed to maintain the relay magnet energized throughout the entering portion of the next succeeding cycle,

during which the record card traverses the lower brushes LB.

With relay R2 energized, its contacts R2a are closed'so that the entering circuits traced above from line 83 to socket 89 will continue through contacts R2a, socket I03, connection I02, socket I04, relay R3, to line. This effects closure of contacts R311, which will remain closed throughout the entering portion of the next cycle. Before the record card engages the lower brushes, cam contactsCI5 close at the time indicated in Fig. 9 to complete a circuit from line 83 through contacts CI5 to the contact roller of the lower brushes. At thistime, there is no card insulating the brushes from the contact roller so that a circuit will continue through all the brushes LB, all the plug connections 86, through sockets 81, contacts R30. and the adding magnets 63, to line 84.

The relative positions of the various parts of the mechanism, at this time, are shown in Fig. 2 and their functioning can best be explained at this time with particular reference to the timin diagram of Fig. 9. The cam 82 holds arm toward the left 'to rock latch I8 out of engagement with the lever Hi. The lever, however, is held in position by engagement of its left-hand end by-roller I05. Energization of magnet 83 has attracted both its armatures BI and 15. The former has released member 51 and the member has rocked slightly in a counterclockwise direction but not sufiiciently to effect clutching engagement.

Full rocking of the member 51 is prevented by engagement of its extension 65 with an arcuate shoe I06 carried by the gear 4|. The shoe I08 will delay the clutching engagement until the beginning of the next following cycle, just before the 9 index point position is sensed by the lower brushes. Rocking of member 51 has caused a pin IIll to release a spring pressed latch I08 for engagement with link I9 so that, as cam 82 continues to rotate, the follower 80 will be held in the position shown in Fig. 2. In other words, when the X" perforation is sensed by the upper brushes the plug connected magnets I53 are energized to trip their clutches but actual clutching engagement is delayed until the beginning of the next cycle.

When extension 65 rides oil shoe I06, complete clutching action is effected and all the accumulator wheels will commence to turn at the 9 time in the cycle to begin entering nines in each order. In the meantime, when roller I05 leaves the-left end of lever 18 the magnet 83 will have become deenergized so that its armature I5 is back in latching position with respect to lever 16.

As the. card now traverses the lower brushes, circuits will be completed upon the sensing of perforations which are traceable through the magnets 63 through the same circuits as traced hereinabove for adding operations. Energization of magnet 53 at this time, however, will cause its armature 15 to release lever 18 whereupon the spring I09 will rock the lever in a counterclockwise direction and a pin I'I0 therein will engage arm 62 to rock member 51 clockwise and effect declutching of the accumulator wheel, after the wheel has advanced an amount representing the nines complementary value of the number represented on the card. Restoration of member 51 will disengage latch I08 from link 19 so that cam 80 will again rock into engagement with its cam 82. I

Briefly summarizing the mechanical operation involved in entering complements the sensing of nines into all orders and the engaged clutches will thereafterbe uncoupled at differential times when the magnets 63 are energized through the same circuit connections as when adding, the energization at this time causing release of lever 16 so it may in turn rock member 51 clockwise.

Total printing Referring to Fig.8, the brushes 50 integral with the accumulating wheel take differential positions in accordance with the amount standing on the wheel, to connect the segments 5| with the common conductors 52. When it is desired to print the amount standing on the accumulator, key contacts I20 are closed to complete a circuit from line 84 through contacts C2l, relay magnet R5 to line 83. Relay. R5 closes its contacts RM to provide a holding circuit through contacts C19. Relay R5 also closes its contacts R50. connecting the print magnets 3| to the related common conductors 52. A plurality of impulse emitting cam controlled contacts designated C to C9 are timed to connect the 9, 8, 7, etc. segments 5| in turn to line 83 through normally closed relay contacts Ric so that, 'forexample, with the brush 5!! of the units order standing at "6 as indicated in dotted lines, a circuit is traceable from line 83,

through cam contacts C6, contacts R6e, 6 segment 5|, brush 50, units conductor 52, contacts R80, print magnet 3|, to line 84. In this manner the amount standing on the accumulator may be printed. Relay R5 also opens a pair of contacts Rib to prevent energization of relay R3 during a total printing cycle.

Resetting Resetting is effected by entering into the accumulator the tens complement of the amount standing therein and is brought about as follows:

7 Closure of the reset key contacts I22 will complete .tacts Ric to connect the readout strips 52 to wires 84, leading to the accumulator magnets 63. The relay R6 also causes opening of its contacts Rte and closure of contacts Rif, the elfect of this shifting of the latter contacts is to connect the cam contacts C9, C8, etc. to the segments 5| in reverse order. That is, the contacts C9 will be connected to the zero segments 5|, the contacts C8 to the 1 segments 5|, etc. Thus, for example. with the brush 50 or the units order standing at 6 as indicated, a circuit will be traceable when cam contacts C3 close, from line 83, contacts C3, contacts R6), 6 segment 5| in the units order.

brush 50, conductor 52, ccntacts Rfic, wire 94 tomagnet 63 tripping the latter, at the 3 time to enter a 3 in that order.

Relay magnet R6 also closes a pair of contacts Rid to 'enter an additional elusive one intothe units order to raise the 9 standing therein,after the contacts C9 to C0 have operated, to zero. This circuit is traceable from line 83 through wire 98, contacts Rlc, cam contacts CIO (which close at the carry time), contacts Rid, wire 94 to magnet 63 of the units order and thence to line 84.

With this and the other orders standing at 9, the

entered unit will be transmitted. through the carry contacts 69, II to each of the'higher orders and advance them to zero. Relay R6 also opens a pair of contacts Rib to prevent energization of relay R3 during the resetting operation.

In certain classes of work, it maybe desirable to have all cards which pass through the machine, effect subtractive entry of the amounts recorded thereon, irrespective of whether there is a special X" hole or not. In such case, a plug connection I30 is made as shown in Fig. 11 between sockets 88 and HM, so that for each card, relay R3 will be energized while contacts Cl2 are closed, and contacts C15 which close during such time will energize magnets 63 to control the entry of nines and later, the circuits through the brushes LB will again energize the magnets 63 to interrupt advance of the accumulator wheels when the nine complement has been entered.

Likewise, if only adding is to be effected a single connection may be made between sockets 88 and 98 instead of the two connections 86a and 92 shown in Fig. 8.

While there has been shown and described and pointed out the fundamental novel features of the invention as applied to a single modification it will be understood that various omissions and substitutions andchanges in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated by the scope of the following claims.v

What is claimed is:

1. In anaccumulating unit for an accounting machine, an accumulating wheel which is to be advanced to any of a plurality of rotative positions to represent diiferent amounts, a continuously rotating driving element, said wheel and driving element being adapted for clutching engagement with each other during a cycle of rotation of said driving element, a magnet, a pair of separate armatures operated thereby, a clutch engaging device normally held by one of said armatures to cause, upon release, clutching engagement between the wheel and driving element, means operative during a predetermined period in the rotation of the driving element for preventing clutching engagement when said clutch engaging device is released upon a first energization of said magnet duringsaid period and enabling clutching engagement at the end of said period, a releasing member normally held by the other of saidarmatures to cause, upon release, restoration of said clutch engaging device, a latch normally holding'said releasing member against operation, means operative during said predetermined period for moving said latch out of engagement with said releasing member and means controlled by said clutch engaging device, when released during said predetermined period, for locking said latch in ineffective position whereby said other armature may subsequently effectively release said releasing member upon a second energization of said magnet to cause disengagement of said wheel and driving element.

2. In an accumulating unit for an accounting machine, an accumulating wheel which'is to be advanced to any of a plurality of rotative positions to representdifferent amounts, a continuously rotating driving element, said wheel and element being adapted. for clutching engagement with one another during a cycle of rotation of said driving element, devices for coupling said wheel to said element for rotation therewith, devices operating upon said coupling devices to effect uncoupling, a single magnet for controlling the operation of both said devices, circuit connections including said magnet for energizing the same during a cycle of operation of said driving element, said coupling devices being responsive to one energization of said magnet, means for causing said second named devices to be unresponsive to said energization, and means controlled by said coupling devices and said driving element for rendering said causing means ineffective so as to enable said second named devices to be responsive to a second energization of said magnet during said cycle of operation.

3. In a machine of the class described, an accumulating wheel which is to be advanced to any of a plurality of rotative positions to represent different digits, a continuously rotating driving wheel, said wheels being adapted for clutching engagement with each other during a cycle of rotation of the driving wheel, a spring urged coupling device, a latch for holding said device in ineffective position, a magnet having a pair of independent armatures, one of said armatures constituting said latch, a knockout lever 1 for said coupling device, a latch normally holding said lever in ineffective position, the second armature also restraining the lever against movement, means for energizing said magnet to effect release of said coupling device at a predetermined point in a cycle of rotation of said driving element, a member movable with said driving element for delaying effective coupling action until a predetermined point in the following cycle, further means movable with said driving element for releasing said lever latch when the coupling device is initially released, means for holding said lever latch in released positionwhereby the lever is held solely, by the second armature, and means for energizing said magnet during said following cycle to cause the second armature to release said lever whereby said coupling device will be operated to effect uncoupling of the wheels.

4. In a machine controlled by record cards containing perforations differentially located therein, a pair'of spaced sensing elements, means for feeding a record card to pass said elements in succession, a single magnet having a. single winding, a circuit connection thereto, means forconnecting said circuit connection to the second of said sensing elements, means controlled by the first of said sensing elements upon sensing a perforation in a predetermined position of the card for effecting an operation of said connecting means and for maintaining the same in operation, means including said second sensing element for completing a circuit to energize said magnet through its circuit connection and said connecting means before the leading edge of the card has passed the second element and after the leading edge has passed the first sensing element, means also including saidsecond sensing element effectiveupon sensing a perforation as the card passes said second element for completinga second circuit to energize said magnet a second time through said circuit connection and connecting means, an accumulating wheel,

a driving element, said wheel and element being adapted for clutching engagement with one another, devices for coupling the two, devices operating upon said coupling devices to effect uncoupling, said coupling devices being responsive to said magnet when it receives said first impulse, means for causing said second named devices to be unresponsive to said first energization and means controlled by said coupling devices and said driving element for rendering said causing means ineffective so as toenable said second named devices to be responsive to a second energization of said -magnet whereby the wheel and element are uncoupled.

5. In a machine controlled by record cards containing perforations differentially located therein, a sensing element, means for feeding a record card to and by said element, a magnet, a circuit connection thereto, means for connecting said circuit connection to said sensing element, means for effecting an operation of said connecting means, means for rendering the effecting means continuously effective, means for completing a circuit to energize said magnet through its circuit connection, said sensing element, and said connecting means as the card advances to and before the card passes the sensing element, means rendered effective by said sensing element upon sensing a perforation as the card passes said element for completing a second circuit to energize said magnet a second time through said circuit connection and said connecting means, anaccumulating wheel, a driving element, saidwheel and element being adapted for clutching engagement with one anating upon said coupling devices to effect uncoupling, said coupling devices being responsive to said magnet when it receives said first impulse, means for causing said second named-devices tobe unresponsive to said first energization and means controlled by said coupling devices and said driving element for rendering said causing means ineffective so as .to enable said second named devices to be responsive to a second energization of said magnet whereby the wheel and element are uncoupled.

6. In amachine controlled by records containing perforations differentially located thereon, a sensing element, means for feeding a record card to and by said element, a magnet, a circuit connection 'thereto, means for connecting said circuit connection to said sensing element, means for effecting an operation of said connecting means, a timing device for rendering the operation effecting means of said connecting means effective as the card advances to-and as it passes' by the sensing element, a second timing device for rendering the operation effecting means of said connecting means effective only while the card is passing the sensing element and settable means arranged when set in one position to render effective an operation of said first named timing device and when set in another position to render effective an operation of said second timing device, means for completing a circuit to energize said magnet through its circuit connection, said sensing element, and said connecting means as the card advances to and before the card passes the sensing element, means rendered effective by said sensing element upon sensing a perforation as the card passes for rendering said causing means inefl'ective so as to enable said second named devices to be responsive to a second energization of said magnet whereby the wheel and element are uncoupled.

7. The invention set forth in claim in which a timing device is provided which is normally operative to render the operation effecting means of said connecting means eifective only while the card is passing the sensing element and a second timing device is provided for rendering the operation efi'ecting means of said connectving means effective as the card advances to and as it is passing by the sensing element, a further sensing element and means including said means for rendering the effecting means eiTective, controlled by said further sensing element in response to a special designation in the card for causing said second device to supersede the first named device in controlling the period of effective operation of said connecting means.

8. In a machine or the class described having an accumulator wheel which is to be advanced to any of a plurality of rotative positions to represent different digits, a continuously rotating driving wheel having a number of rotative positions with respect to a fixed point, including a succession of positions, one for each of the digits and a plurality of additional positions, said wheeis being adapted for clutching engagement with each other, a spring-urged coupling device for effecting driving engagement between the wheels, a latch normally holding said coupling device out of operative position, and means for tripping said latch, including in combination, a shoe driven with said driving wheel and arranged to be engaged by the coupling device to prevent the effective operation of the latter when the latch is tripped during a predetermined one of said additional rotative positions of the driving wheel, said shoe being configured to hold the coupling device until the rotative position related to the digit 9 and to release the device at such time, and means driven with the driving wheel for disengaging the coupling device after all the digital positions have passed whereby the initial tripping of said latch at said additional rotative position will result in the advance of the accumulator wheel in accordance with the digit 9.

9. In a machine oi the class described having an, accumulator wheel which is to be advanced to any of a plurality of rotative positions to represent different digits, a continuously rotating driving wheel having a number of rotative positions with respect to a fixed point including a succession of positions, one for each of the digits and a plurality of additional positions, said wheels being adapted for clutching engagement with each other, a spring-urged coupling device for eii'ecting driving engagement between the Wheels, a latch normally holding said coupling device out of operative position, and means for tripping said latch, including in combination, means coordinated with said driving wheel and effective when the latch is tripped during one of.

said additional rotative positions of the driving wheel for preventing clutch engagement at such position, said means serving to retard the coupling device and automatically release the same at the rotative position of the driving wheel related to one of the digits whereby clutching will be efiected at said position and means for disengaging said coupling device at a position following said digital rotative position.

10. Ina machine controlled by cards having a column of digit representing positions and an extra index point position, a pair of spaced sensing elements, means for advancing a record card to completely pass one element and then the other, with the column of digit representing index point positions and the extra index point position successively passing the elements inciuding in combination, an accumulator magnet having a single winding, a normally incomplete circuit connection between said magnet and'said second sensing element, a relay magnet for closing said connection, a second relay magnet for controlling the energization of the first-named relay magnet, circuit connections including said second relay magnet, arranged to be completed and held under control of said first sensing element when a perforation is sensed thereby in said extra index point position, whereby said first-named relay magnet will close the connection between the second sensing element and said accumulator magnet and hold the connection closed until the card has passed the second sensing element, means for sending an impulse through said closed connections and said second sensing element before the card has reached the second sensing element and after it haspassed the first sensing element, further means for sending a second impulse to the accumulator magnet through a perforation in any of the digital index point positions, the second sensing element and said closed connections, an accumulator wheel, a driving element, said wheel and element being adapted for clutching engagement with one another, devices for coupling the two, devices operating upon said coupling devices to effect uncoupling, said' coupling devices being responsive to said magnet when it receives said first impulse, means for causing said semnd named devices to be unresponsive to saidf'first energization and means controlled by said'i'c'oupling devices and said driving element tor-Irendering said causing means ineii'ective so-a's to enable said second named devices to be responsive to a second energization of said magnet whereby the wheel and element are unco upled.

' EDWARD J. 

